Blusterer and Big-timer

Blusterer noun - A person who causes trouble by speaking indiscreetly.

Big-timer and blusterer are semantically related in braggart topic. In some cases you can use "Big-timer" instead a noun "Blusterer", when it comes to topics like person who talks boastingly.

Big-timer noun - One of high position or importance within a group.

Blusterer and big-timer are semantically related in braggart topic. You can use "Blusterer" instead a noun phrase "Big-timer", if it concerns topics such as person who talks boastingly.